guptill



3 Sheets-Sheet 1 (No Model.)

B. G. GUPTILL. ANNEALING OVEN FOR PLATE GLASS.

INV N706 Patented eph 23, 1890.

WITNESSES ATTORNEY.

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(No Model.) a Sheets-Sheet 2. R. G. GUPTILL. ANNEALING OVEN FOR PLATE GLASS.

No. 1027. 5 Patented Sept. 23, 1890.

E Nil R WITNESSES: i NINE/V70]? ATTORNEY.

(No Model.) a Sheets-Sheet 3.

R. G. GUPTILL. ANNBALING OVEN FOR PLATE GLASS.

No. 437,027. Patented Sept. 23, 1890.

Q v; \v i nlll m WITNESSES. INVENTUH X5,@i e.

ATTORNEY.

UNITED STATES RODERICK PATENT OFF CE,

G. GUPTILL, OF ELGIN, ILLINOIS, ASSIGNOR OF ONE-FOURTH TO LEON O. BAILEY, OF INDIANAPOLIS, INDIANA.

ANN EALI NG-OVENA FOR PLATE-GLASS.

SPECIFICATION forming part of Letters Iatent No. 437,027, dated September 23, 1890. Application filed December 28, 1889; Serial No. 335,288. (No model.)

To all whom it may concern.-

Be it known that I, RODERICK G. GUPTILL, of Elgin, county of Kane, and State of Illinois, have invented certain new and useful-Improvements in Annealing-Ovens for Plate- 'Glass; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like letters refer to like parts.

My invention relates to the construction of ovens or kilns for annealing plate-glass, and will be understood from the following description.

. In the drawings, Figure 1 represents afront View of the oven. Fig. 2 is a top view of the oven-floor partly broken away, showing different sections in the various stages of construction and the mouth-plate. Fig. 3 is an enlarged detail View of the mouth-plate partly broken away, showing the frame-work and elevating-screws, and the piers below.

The structure rests upon piers p, which are set into the earth 6, open spaces 819 being left above to allow for the expansion of the earth under the action of the heat radiated from the bottom of the oven. Independent of the side walls these piers support foundationarches a upon which the oven rests, and from each of the open spaces beneath these arches small fines f lead into the larger flues fiwhich are constructed as hereinafter shown and described. These arches are formed of interlocking bricks I), having a projection upon one side and a groove or recess upon the other, and upon these are laid the lower or basal course of bricks, and above these are the smaller columns 0, which are constructed in the manner shown in Fig. 2 in the righthand corner, the open spaces f between the piers permitting the passage of the currents of hot or cold air. These piers are about five bricks in height, and thespaces between are covered with other bricks b b in the manner shown at the left-hand corner of Fig. 2, thesebricks being of ordinary size, except that the corners are square brick b nearly double the size of the others, and these are supported in the manner shown in Fig. 3, wherein the second layer or course of bricks from the top of the columns or piers projects some distance beyond the othcrs,in order to form a bearing by their projecting flanges for the upper bricks. These piers are preferably left hollow, in order that they may 0001 more quickly. The piers and spaces between having been covered with these bricks 1) 11 as described, the whole is then covered with a thin layer of silica or flint-sand of a good quality, and upon the top of this sand are laid tiles it as shown in Fig. 2, making a finish to the floor of the oven. As the mortar and cement generally used are subject to considerable expansion and contraction under varying tem peratures, I prefer not to use these in laying up my brick or tiles, except in the short vertical seams between the abutting ends of the brick.

As shown in Fig. 2,the oven has two openings or months 0, over'which are the secondary arches a and another arch a, which forms the roof or top, and these arches are constructed of keyed brick, as before specified.

In Fig. 3 is shown the mouth-plate m, which is designed to be used in connection with my oven. It is not necessary, however, that the particular form of the mouth-plate shown in the drawings should be used in connection with the oven for which this application is made; but an ordinary mouth-plate may be used. This mouth-plate receives the sheet of glass from the carriage table and supports it as it is being passed over it into the oven. The first and larger plate being laid upon the oven-floor, the second, which is intended to be laid upon the first, is passed over the mouth-plate, which has been lifted by means of the cone screws a sufficient distanceone-half to threequarters of an inch-and the plate is then slid over and upon the other plate, and by repeating this operation three or more plates may be placed one above and resting upon the other to be annealed at one time, and the capacity of the oven willbe thereby greatly increased. WVhen the glass is to be removed from the oven after being annealed, the mouth-plate is adjusted to the proper height and the top plate drawn down upon it, and after it is removed the mouth-plate is lowered to receive the next one, and so on until the oven is emptied.

oven-floor, are not cemented,and open fines f surround each. The covering bricks b b are laid over these loosely and without cement. The silica or flint-sand is loosely covered over these, and is only slightly affected by varying temperature. The tilest t, laid upon this sand, are held together only by the interlocking joints. The arched roof of the oven is formed of the bricks I) keyed together; and I thus provide for the expansion and contraction of any and all parts of my oven, and the free passage and radiation of air-currents, without in anywise alfecting the structure.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is the following:

1. An annealing-oven supported upon piers let into the soil, the courses being laid up without cement 01' mortar in the horizontal joints, substantially as shown and described.

2. An annealing-oven wherein open spaces are left in the soil between the foundationpiers to allow for expansion and contraction, substantially as shown and described.

3. An annealing-oven whose floor is supported upon isolated piers c of brick laid in courses without cementor mortar, substantially as shown and described.

4. An annealing-oven whose floor is sup ported upon isolated piers with air-spaces about them, such piers covered with tiles or brick loosely laid therein, and these in turn by silica or flint-sand, and the sand by an upper course of interlocking tiles, substantially as described.

5. In an annealing-oven, a floor formed of interlocking tiles 6 6, supported upon isolated piers c, fiuesf about such piers, the latter supported upon arches a, formed of interlocking bricks b, these arches supported upon soil-piers p, and air-spaces 31), formed in the soil 6 near the top of the piers and connected by passages f with air-fines f, substantially as shown and described.

6. An annealing-oven having a top formed of arched interlocking bricks, openings 0, arched with similar brick, a floor composed of loosely-interlocking tiles resting upon isolated piers of brick or tile laid with uncemented joints, such piers surrounded by airspaces, these piers supported on foundation arches and piers let into the soil below, and air-spaces formed in the soil about such piers and connected by passages with those about the piers that support the floor, all combined substantially as shown and described.

In witness whereof I have hereunto set my hand this 26th day of November, 1889.

RODERICK I G. GUPTILL.

Witnesses:

C. P. JAcoBs, E. B. GRIFFITH. 

